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Ignition and combustion characteristics of metallized propellantsShakedown and calibration of the experimental apparatus designed to study secondary atomization and ignition characteristics of aluminum slurry propellants was begun and nears completion. The burner was tested over an array of equivalence ratios and oxygen mass fractions to determine the permissible range of operating conditions. A burner flow control system was designed and fabricated which permits independent control of flame stoichiometry and oxidant O2 concentrations. The Sun slurry formulation was selected as the base for initial testing. Laser beam waists at the focal volume of the single particle sizing system were determined to be 396 microns for the Ar-ion and 81 microns for the He-Ne laser. Size calibrations using pinholes were completed and compared to Mie theory for light scattering from particles. A vibrating office droplet generator was used to test the single particle sizing system dynamically by producing a water droplet laden gas flow. The data acquisition and analysis programming was completed and testing is in progress. From initial results, the particle sizing, atomization and ignition detection systems appear to be performing as expected.
Document ID
19900017595
Document Type
Contractor Report (CR)
Authors
Turns, S. R.
(Pennsylvania State Univ. University Park, PA, United States)
Mueller, D. C.
(Pennsylvania State Univ. University Park, PA, United States)
Scott, M. J.
(Pennsylvania State Univ. University Park, PA, United States)
Date Acquired
September 6, 2013
Publication Date
July 1, 1990
Subject Category
Inorganic And Physical Chemistry
Report/Patent Number
NASA-CR-186870
NAS 1.26:186870
Accession Number
90N26911
Funding Number(s)
CONTRACT_GRANT: NAG3-1044
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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